broadcasting on pbs in america and across the globe. coming up, safeguarding the stockpiles. leaders from over 40 countries gather at president obama's nuclear summit. a celebrity love match -- india and pakistan sporting stars that tied the knot in spite of a few last-minute hitches. >> the body of the polish president's wyck has now been identified following saturday's plane crash in russia in which she, her husband's lech kaczynski, and dozens of senior polish military and civilian officials were killed. it had been hoped her body could be repatriated tuesday. some of the 96 victims are still trapped under wreckage at the site of the crash. the president's body will lie in state as the country absorbs the shock of a plane crash that claimed almost an entire generation of highest ranking politicians and military personnel from poland. here is duncan kennedy. >> in silence and great numbers they queued up to sign of book of condolence. thousands of people wishing to show their respect of the late president, waiting president in the spring sunshine. the initial shock us -- sa